Feather Stars (crinoids) and their look-alike camouflaged. Tiny little commensal crustaceans that live camouflaged and hidden among the feathery arms and striking colors of a crinoids' arms! Presumably, the crinoids provide some protection from predators.
he element of surprise gives this rhino viper in Cameroon an edge over prey. Quick-kill venom finishes the job. Vipers provide valuable toxins, including those used in drugs for hypertension and heart disease and to control bleeding during surgery.